Intermittent-driving mechanism for book binding or covering machines



A. BREDENBERG.

INTERMITTENT DRlvlNG MECHANISM FOR BooK BxNmNG 0R CovERlNG MACHINES.

APPLICATlON flLED FEB. 1, 1918. bRENEWED DEC. 16,1919.

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A. BREDENBERG.

INTERMITTENT DRIVING MECHANISM FOR BOOK BINDING 0R COVERING MACHINES.

Patented J uly 27, 1920.

"mlmlllill APPLICATION FILED FEB. I, |918- RENEWED DEC.

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INVENTOR Awami 1&2 ATTORNEYS.

' vide a book tion AUNITED STATE s PATENT OFFICE.

SHERIDAN monwoiixs,

Specification of Letters Patent.

Patented July 27, 1920.

Applicaton'led February 1, 1918, Serial No. 214,844. Renewed December `16, 1919. Serial No. 345,303.

To all fr0/wm t may concern:

Be it known that I, ALFRED BREDENBERG, a citizen of the United States, residing at Champlain, in the county of Clinton and State of New York, have invented 'certain new and useful Improvements in Intermittent-Driving Mechanism for Book Binding or Covering Machines, of which the ,following is a specification, reference being had therein to the accompanying drawing.

This invention relates to book binding or covering machines of the generaltypes, for

example, illustrated in my yprior Patents Nos. 1,073,324 and 1,248,252, wherein a procession of the books to be treated are advanced through the machine by a train of clamps or other suitable carrier. The chief object of the present improvement is to probinding or covering machine wherein the book carrier or clamp train is intermittently driven or advanced in a superior manner.

In such machines the devices for operating upon the book usually include, besides the infeeding devices, devices for trimming and then roughing the protruding backs of the books, and afterward gluing, applying a pervious strip, and then a cover thereto, and finally breaking the cover before discharge of the completed book, although all of these operations are not necessary, and in mere covering machines the trimming, roughing and strip applying are omitted. In my said Patent 1,073,324 the roughing, gluing and strip applying mechanisms are capable of operating without interrupting the travel of the book, but the infeeding, trimming, cover applying and cover breaking devices are of stationary location, and therefore each vbook is' caused to pause at intervals to permit the operations. This intermittent class of machine is advantageous in simplifying the structure, since the coverbreaking device, for example, and other mechanisms may be arranged to have a lixed location withoutthe complication Vof accommodating the same to the advancing movement of the books. In my said Patent 1,248,252 each mechanism is adapted to operate during book travel, and therefore the carrier is enabled to be driven either intermittently or continuously.

particular object of the present invenis to retain the advantages inherent in the intermittent class of machine, while materially improving the intermittent drive, namely, by providing in each actuation for a minimum extent or period of dwell or rest (substantially less than 50%) as compared with a maximum extent of motion or drive (substantially over 50%) thus permitting the necessary'length of advance in each driving action with easy motion changes and without the necessity of abrupt starting or stoppage; and especially by a mechanism in which the driving speed changes gradually from zero in starting and toward zero in stopping, and with an easy acceleration and retardation, analogous to the harmonic motion of a crosshead. It is only necessary to adapt to the brief period of dwell those operating' devices which do not operate upon the book during its travel.

To the accomplishment of these objects the present invention consists in the novel machine, mechanisms, combinations, `devices and other features shown, described or claimed herein. Specifically I prefer to use the pin and slot principle of intermittent drive, adapted to the present special purposes, and of novel structure and mode of action. W ith this device or its equivalent the driving action is so improved in smoothness and efHciency that the machine is capable of operating at a greater rate of output than heretofore known intermittent machines; and the principle is capable of application to secure a yet greater rate of output by causing' the carrier to advance the length of two books in each driving movement and causing certain of the devices, for example, the infeed or the cover applier or the cover breaker, to operate simultaneously on two books at each operation.

- I will describe an example of a book binding' or covering machine in which the principles of the present invention are embodied. Referring to the accompanying drawings, Figure 1 is a general plan view of a book binding or covering machine intermittently' driven on the vention.

Fig. 2 is a partial plan view of the driving devices near the left end thereof, the same partly broken away to better show the underneath parts.

Fig. 3 is a front elevation of the mechanism shown in Fig. 2.

principles of the present in- Figs. 4, 5, Gand. 7 are diagrams of the action of thedriving mechanism.

In Fig. 1 at the left is shown a gatheringV mechanism 21, in which signatures are supposed to be gathered in groups and delivered successively toward the right,rwhere they are indicated in dotted lines as groups or books B. From the delivery of the gathering mechanism a transfer mechanism 22 conveys the successive books to the binding or covering machine 23. This machine comprises frame parts 24, some of which constitute guides for a book carrier consisting of an endless train of clamps 25, articulated together vby hinges 26. Clamp opening and closing devices of suitable nature will be understood.

The transfer mechanism 22 conveys the successive books to the infeed .27, by which each'book is placed in its open clamp, after which the clamp is closed and carries the book around the path or orbit of the carrier. The ydescribed transfer and infeed devices may be, for example, substantially as described in my prior 3atent 1,051,074, or might be replaced by the infeed 0f my said Patent No. 1,248,252.

Each clamp carrying its book after leaving the .in'feeding position advances and then pauses, and advances again around the path of the carrier to permit operations by the several operating devices, the lirst of which is the trimming device 28, which takes off the back folds of the signatures by a shearing action. The book may next be treated by the roughing devices 2E), which prepare it for the reception of adhesive, which may subsequently be applied by the gluing devices 30, comprising glue rollers running vin tanks of adhesive. 1n order to better consolidate the glued signatures, a

ystrip of fabric or other strong pervious material may be attached by the strip applying mechanism 31, after which the covering device 32 operates to lift a cover into contact with the glued back of the book. The book passing onward with the cover is carried to the cover breaking device, which operates two or more times on each book, and serves to snugly press'l and fold the cover in place. Each Vbook then travels around the end of the machine and is discharged at the delivery mechanism 34.

To cause the advancing movement of the clamp train, the hinges 26 thereof are shown engaging the recesses in a large horizontal sprocket wheel 36,` mounted on a .vertical driving shaft 37, having a wheel or disk 38 near its lower end, as seen in Fig. 3.

This wheel 38 may be considered the drivenY member or disk of the intermittent drive mechanism, and by giving it the proper intermittent rotation theV movements are correspondingly communicated to the sprocket `36 and the book carrier.

is shown a bevel pinion 43, engaging a second bevel pinion 44 on -a cross shaft, 45, which in turn carries a .bevel pinion 46, engaging the bevel teeth 47 on a horizontal wheel or disk 50, mounted on aV short vertical shaft. 48. All the partsV 40-50 thus far described .rotate continuously at uniformfspeed during the operation of the machine, and may be considered'as driving members. v

l will now Vdescribe an lintermittent transmitting mechanism between the idriving disk 50 Vand the driven disk 38, such as to secure minimum extent of dwell and maximum drive, as aforesaid, yet with an easy shockless startingandv stoppage. VlVhile this result might be obtained through different transmitting connections, 1 have illustrated one based on vthe principle of the pin and slot intermittent drive, but of a peculiar structure, arrangement, operation and result. The relation of the driving disk 50 andits shaft 48with respect to the driven disk `38 and v.its shaft 37 is indicated in Figs.'2 and 3.y j The driving disk carries the pin or stud 52, while thedriven disk is provided with preferably radial slots 53, bounded Vby the two side walls 54 thereof, Six of these radial slots are shown, and their arrangement with respect to the driving stud 52 is such, as indicated in Fig. 2, that the stud enters and leaves each slot at the inner end thereof and Ywith a precisely tangential motion.' This novelarrangement permits a proportioningV of the parts such that approximately 60% of the time of each rotation of the driving disk is occupied in gradually accelerating, driving, retarding vand stopping the driven disk, which latter with the clamp train vremains stationaryV for approximately only 40% of the period. In addition to theseff'eatures, the walls 54 as shown extended in the form of an arc 57 whichcoperates with an arc 56 formed on top of the driving disk 50 in such manner that during the non-driving period the driven members are'effectively held against accidental advance. Y

The above described mechanism fully embodies all the advantages and objects Vabove set forth in avery advantageous manner. rIhe several stages or positions of the driving or driven parts will be understood by comparing the diagrams, Figs. 4', 5, 6'and 7. In Fig. 4 the parts are shown just after the period `of a dwell when the drive is about to commence. The driving pin 52 is seen to be. entering one of. the driving slots 53 in an soY exactly radial direction with respect to the slot, the slot standing tangentially to the circle being described by the pin. Therefore, the continued advance of the pin will bring about a gradual starting entirely free from abruptness. F ig. 5 shows the position oi the parts aite a short extent of drive, F ig. 6 shows the same when the drive is halt com! pleted. At this point the pin 52 is working at maximum effectiveness, since its motion is at right angles to the radial direction of the slot, but the speed of the driven disk is not excessive, because now it is being driven from a maximum radius. The continued motion brings the parts to the Fig. 7 position, wherein the driven disk has been brought to rest and the pin is about to leave the slot. It will be noticed that at this time the locking arc 56 is in a position to prevent any possible displacement from momentum. It will likewise be observed from Fig. el that the arc 56 has moved around the arc 57, so as to insure exact positioning of the driven disk before the pin enters the next succeedingradial slot of the driven disk.

I have provided six radial slots in the driven disk coperating with the driving pin, and this particular arrangement together with the shown proportions, arrangement and relation of the parts, conduces to the advantageous results mentioned.

t will thus be seen that I have described a book binding or covering machine embedi ing the principles and attaining the objects and advantages of the present invention. Since many matters of combination, design, arrangement, detail and other features may be variously modiiied without departing from the underlying principles of the invention, I do not wish to restrict the invention to such features except in so 'far as set forth in the appended claims.

That is claimed is.:

l. Mechanism for intermittently driving an endless carrier, comprising a rotary driven member by which thecarrier is advanced, the same formed with a plurality of radial tracks equidistantly arranged at less than a quadrant apart and opening inwardly toward the axis of rotation, a rotating driving member having its axis located eccentrically to but substantially within the periphery of the driven member, and said driving member having a driving 4pin arranged to engage and disengage the inward ends of the successive tracks by a motion tangential to each track, whereby the driven member and carrier at each actuation are maintained in motion `for a period greater than the period of rest and with easy starting and stopping action.

2. Mechanism for intermittently driving an endless carrier, comprising a rotary driven member by which the carrier is advanced, the same formed with six radial tracks arranged 600 apart and opening inwardly toward the axis of rotation, a rotating driving member having its axis located eccentrically to but substantially within the periphery of the driven member, and said driving member having a driving pin arranged to engage and disengage the inward ends orn the successive tracks by a motion tangential to each track, whereby the driven member and carrier at each actuation are maintained in motion for a period greater than the period or' rest and with easy starting and stopping action.

8. Mechanism for intermittently driving an endless carrier, comprising a rotary driven member by which the carrier is advanced, the same formed with a plurality of radial tracks equidistantly arranged at less than a quadrant apart and opening inwardly toward the axis of rotation, a rotating di" ling member having its axis located ecccntrically to but substantially within the periphery of the driven member, and said driving member having a driving pin arranged to engage and disengage the inifaid ends of the successive tracks by a motion tangential to each track, and means for holding the driven member against displacement when not driven through said pin; whereby the driven member and carrier at each vactuation are maintained in motion for a period greater than the period of rest and with easy starting and stopping action.

In testimony whereof, I have afiixed my signature hereto.

ALFRED BREDENBERG 

